27. The Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two numbers is 13 and 845 respectively. If one of the numbers is 65, the other number is:-(a) 91 (b) 104 (c) 117 (d) 169

28. The Least Common Multiple of two numbers is 504. Which of the following numbers cannot be the Highest Common Factor of these numbers?(a) 8 (b) 18 (c) 42 (d) 36Clue:- The Least Common Multiple should be divisible by the Greatest Common Divisor.